Garbage Compost

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Pondicherry Agro Service and Industries Corporation Limited (PASIC) has initiated a project on “Bioprocessing of Urban Garbage for Enriched Compost Production” in February 1996, on a small scale. This eco-friendly project aims at the twin objectives viz., Safe disposal of urban garbage generated in Pondicherry by scientific and sanitary methods, and presentation of the Humus rich end product – “Enriched Compost” – to the farming community, so as to minimise the inorganic fertilizer consumption to the tune of 20 – 25% and alienate soil fertility and crop productivity.


The main raw material is urban garbage which is being obtained from the Oulgaret Municipality, Villianur Commune Panchayat and Pondicherry Municipality. The estimated garbage generation at Pondicherry is around 200 Tons/day. Other raw materials such as pressmud, bagasse and fly ash, obtained from the Pondicherry Co-operative Sugar Mills, Coir waste and Poultry litter obtained from near by villages, are also being utilized for the production of enriched compost.


PASIC has established 3 Compost units at Pondicherry and 1 at Karaikal for processing the Urban Garbage into Compost.

Composting of Urban Garbage is carried out with the ‘State of Art Technology’, viz., “Aerobic decomposition of garbage in windrows”. Decomposition is accelerated by inoculation of Microbial cultures and by providing required fermentation optima (maintenance of optimum moisture, aeration and Temperature). The composting process takes 40 to 45 days, after which the decomposed material is segregated with help of mechanical Rotary Screens and Vibratory Sieves. The Resultant product is URBAN COMPOST, which is admixtured with other decomposed biomass like Pressmud, Bagasse, Coir waste, Agricultural residues , Poultry litter and small proportions of soil amelioriants like Gypsum, Rock Phosphate, Fly ash, and finally with N2 fixing and P solublising Biofertilisers and Pseudomonas fluorescens . The final product is thoroughly mixed and is termed as “ENRICHED COMPOST” which is rich in organic matter content (20 – 25%) in addition to Major (N, P, K), Secondary ( Ca, S, Mg) and Minor (Zn, Mn, Fe, Cu, B, Mo, Cl) Nutrients and plant growth promoting Rhizobacteria. This Enriched Compost is distributed to the farmers both in packed bags and also in unpacked state. At present the production capacity of these 4 Units is around 10,000 M.T. of Enriched Compost per annum.


PASIC offers technical consultancy to the needy local bodies in the country, to set up scientific compost yards.This corporation also undertakes fabrication of erection of the required machinaries essential for a compost unit, at low cost.